<template>
  <div class="loginContainer">
    <br><br><br><br><br><br>
    <el-form ref="loginForm" :model="form" :rules="rules" label-width="80px" class="login-box">
      <h3 class="login-title">欢迎登录</h3>
      <el-form-item label="账号" prop="username">
        <el-input type="text" placeholder="请输入账号" v-model="form.username"/>
      </el-form-item>
      <el-form-item label="密码" prop="password">
        <el-input  type="password" placeholder="请输入密码" v-model="form.password"/>
      </el-form-item>
      <el-form-item label="验证码" prop="captcha">
        <el-row >
          <el-col :span="12">
            <el-input type="text" placeholder="请输入验证码" v-model="form.captcha"></el-input>
          </el-col>
          <el-col :span="8" :offset="2">
            <el-image :src="captchaImg" style="width: 100%; border-radius: 10px" @click="getCaptcha"></el-image>
          </el-col>
        </el-row>
      </el-form-item>
      <el-form-item>
        <el-row>
          <el-col :span="12">
            <el-button type="primary" v-on:click="onSubmit('loginForm')">登录</el-button>
          </el-col>
          <el-col :span="12">
            <el-button plain >注册</el-button>
          </el-col>
        </el-row>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import qs from 'qs'
export default {
  name: "Login",
  data() {
    return {
      form: {
        username: '',
        password: '',
        captcha: '',
        token:''
      },
      captchaImg:'',
      // 表单验证，需要在 el-form-item 元素中增加 prop 属性
      rules: {
        username: [
          {required: true, message: '账号不可为空', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '密码不可为空', trigger: 'blur'},
          {min:6 , max:20,message: '密码长度必须是6-20位数', trigger: 'blur' }
        ],
        captcha:[
          {required: true, message: '验证码不可为空', trigger: 'blur'},
        ]
      },
    }
  },
  methods: {
    onSubmit(formName) {
      // 为表单绑定验证功能
      this.$refs[formName].validate((valid) => {
        if (valid) {
          this.$axios.post('/login?'+qs.stringify(this.form)).then((result)=>{
            console.log(result);
            // 将jwt存储到应用store中
            const jwt=result.headers['authorization']
            this.$store.commit('SET_TOKEN',jwt)
            this.$router.push("/index")
          })
        } else {
          this.dialogVisible = true;
          return false;
        }
      });
    },
    getCaptcha(){
      let formData=this;
      this.$axios.get('/captcha').then(function (value) {
        formData.form.token=value.data.data.token;
        formData.captchaImg=value.data.data.captchaImg;
        formData.form.captcha="";
      })
    }
  },
  created() {
    this.getCaptcha();
  }
}
</script>

<style>
.loginContainer{
  background:url("../assets/imgs/bg-01.jpg");
  backgroundRepeat: "no-repeat";
  background-size:100%;
  height: 100%;
}
.login-box {
  border: 1px solid #DCDFE6;
  width: 350px;
  margin: 0px auto;
  padding: 35px 35px 15px 35px;
  border-radius: 5px;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  box-shadow: 0 0 25px #909399;
  background-color: white;
  opacity: 0.9;
}
.login-title {
  text-align: center;
  margin: 0 auto 40px auto;
  color: #303133;
}
</style>